
Laars Pennant
Model Number: PEN
Versatile boiler for combined home and pool heating.
Technical Specifications
Prices depend on sizing, venting and piping in your home, so we quote every installation.
Sizing: the right size comes from a room-by-room heat-loss calculation, not the size of the old boiler or a rule of thumb. Oversized boilers short-cycle and waste fuel; steam systems are sized to the connected radiation instead. See how we approach boiler installation.
Home-Specific Operating Cost Review
No guaranteed annual savings or payback period
Historical Use
Fuel consumption and weather
Current Rates
Utility and delivered-fuel prices
System Design
Load, piping, controls, and temperatures
Full Specifications
- Model Number
- PEN
- Efficiency (AFUE)
- 88%
- Boiler Type
- Hot Water Boiler
- BTU Input Range
- 75k - 300k BTU
- In Production
- Yes
- Parts Warranty
- 5 years
- Heat Exchanger Warranty
- 10 years
Specification source not yet linked — figures are being verified against manufacturer data.
Ideal For
Homes with pools needing combined heating solution
Expert Review: Laars Pennant
The Laars Pennant delivers solid 88% AFUE efficiency in a traditional cast iron package, representing reliable mid-tier performance for Nassau County homes with hot water baseboard heating systems.
Laars' long manufacturing heritage provides confidence in component quality and parts availability. Our installation teams have serviced Pennant boilers across decades of operation, confirming the platform's durability in Long Island applications.
For homes in Hicksville, Westbury, and the surrounding communities with existing baseboard systems, the Pennant provides straightforward replacement without system modifications. The cast iron heat exchanger handles the thermal demands of Long Island winters while resisting the wear of seasonal cycling.
Bradford White's acquisition of Laars strengthens the brand's manufacturing and support resources. Local distributors like F.W. Webb and Sid Harvey's stock Pennant parts, ensuring rapid service when needed.
The Pennant's atmospheric burner design provides reliable ignition in basement installations, and the boiler's accessible components simplify annual maintenance.
Value proposition: The Pennant represents an excellent choice for homeowners prioritizing proven cast iron reliability at mid-tier pricing, particularly in applications where condensing technology's premium isn't justified.
Key Features & Technology
Steel fire-tube design
Pool and spa compatible
Oil or gas burner
Wide capacity
American made
Advantages
- Versatile heating and pool
- Good capacity range
- Fire-tube durability
- Competitive pricing
Considerations
- 88% AFUE no rebates
- Pool application focus
- Less home heating recognition
Sizing & Installation Notes
Hot water boilers like the Pennant are sized from a room-by-room heat-loss calculation. We never match the old boiler's size — oversized units short-cycle, waste fuel and wear out years early.
Every Laars installation starts with a free in-home assessment covering the heat-loss calculation, venting and chimney condition, and gas or oil supply sizing. Learn more about our boiler installation process, or see current rebate and incentive programs that may apply.
Warranty & Protection
Parts Warranty
5 years
Heat Exchanger
10 years
Our Guarantee
100% Satisfaction
All Laars boiler installations by Home+ Air & Heat include our 1-year workmanship warranty, covering labor and any installation-related issues.
Compare the Laars Lineup
| Model | Efficiency | BTU Range | Fuel | Heat Exchanger Warranty |
|---|---|---|---|---|
| Pennant (this model) | 88% AFUE | 75k - 300k BTU | — | 10 years |
| Mascot FT | 95% AFUE | 80k - 250k BTU | — | 10 years |
| NeoTherm | 96% AFUE | 80k - 500k BTU | — | 10 years |
See the full Laars brand page for lineup context, or browse the Best Hot Water Boilers 2027 guide to compare across brands.
Frequently Asked Questions
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